Suction gathering cup



Feb. 16, 1932. p E 1,845,810

SUCTION GATHERING CUP Filed March 15, 1928 Fig! I [7a 0673 tor: Kari ETl k ider mm @W- A it y.

Patented Feb. 16, 1932 UNITED STATES PATENT OFFICE KARL E. PEILER, OFWEST HARTFORD, CONNECTICUT, ASSIGNOR TO HARTFORD- EMPIRE COMPANY, OFHARTFORD, CONNECTICUT, A CORPORATION OF DELAWARE SUCTION GATHERING CUPMy invention relates to the art of handling molten glass in theprocesses of fabricating glassware.

More specifically the object of this invention is to provide improvedmeans for'making a vacuum connection with the inside of a suction moldor gathering cup employed in separating individual quantities of glassfrom a supply, each suitable for a single article.

One method of obtaining charges of molten glass is by means of a suctiongathering cup which may in itself serve as a mold or as a transferdevice for transferring a charge from a supply of glass to the moldproper. Heretofore two alternative undesirable results have attended theuse of such devices. If the opening through which the air or gas wasdrawn out of the gathering chamber was relatively large, there existed atendency for the molten glass to be drawn into or through such openingwith consequent clogging of the opening because of the freezing of theglass therein. If, on the other hand, such openings were madesufiiciently small to overcome this difficulty, the vacuum was notcreated in the gathering chamber as prompt- 1y as is desirable. It istoward the overcoming of these difliculties that this invention isprimarily directed.

In order to more clearlyexplain the invention, one embodiment thereof isshown in the accompanying drawings, in which:

Figure 1 is a sectional plan taken on the line 1-1 of Fig. 2, and showsthe suction head of a gathering cup; and

Fig. 2 is a sectional elevation showing the suction head with theassociated gathering chamber and suction duct.

In the drawings, the. numeral 11 indicates a gathering cup body having agathering chamber 12 and an opening 13 which con nects with a suctionduct 14. This suction till duct 14 may be formed in a cup supporting andoperating arm 15 having a holder 16 in which the cup 11 fits closely andis held removably in place by a set screw 17 and lock nut 18. As shown,a removable and replaceable sectional head fits in the opening 13. Thishead preferably comprises an inner or central section 19 having the formof asolid cylinder and other sections 20, 20 having the form ofcylindrical sleeves, all arranged concentrically with respect to oneanother and to the wall of the opening 13. Each of the sections has aclose fit at its upper end or the end nearest the suction duct with theadjacent section, and the outer section of the head has a close fitadjacent to its upper end with the wall of the opening 13, whereby theremovable head is held in place against lateral movement. A pin 21extends through aligned transverse openings in all the sections of thehead and has its ends pro jecting into aligned openings in' thesurroundin portion of the cup body, whereby the hea will be held againstaxial displacement in the head opening 13, but can be convenientlremoved and replaced when the pin 21 has een removed. The holder 16prcvents displacement of the pin 21 when the cup is held in place in theholder.

A plurality of very narrow annular openings or orifices 22 are providedin the head in communication with the gathering chamber. These openings22 may be provided by forming the portions of the sections of the headadjacent to the chamber 12 of less diameters than the diameters of theadjacent surrounding walls, as shown, although it is obvious that eachof such openings may be formed in part in a section of the head and inpart in the Wall surrounding that section,-or wholly in the wallsurrounding each section of the head. In the construction illustrated inthe drawings, the annular openings 22 extend only partway longitudinallyof the head and the outer diameters of the head sections adjacent to theduct 14 are greater than the outer diameters of the portions of suchsections adjacent to the chamber 12. While these open ings 22 are verysmall in one dimens on, the radial dimension thereof being only a fewthousandths of an inch, the total length or circular dimension of eachopening is such as to provide a total orifice areasufiicient to permit aquick application of vacuum. By providing a plurality of such annularorifices, the total area of the suction opening or port is stillfurther'increased.

These narrow orifices being primarily provided for the purpose ofpermitting a quick application of vacuum without permitting the entranceof molten glass thereinto, it is possible to provide larger passagesabove 12 and the end adjacent the duct 14. and are connected bylongitudinal grooves 24 with the suction duct 14. 4

It will be seen that means have been thus provided for preventing thepassage'of the molten glass into the suction orifice or theclogging ofthe suction passages because of glass drawn thereinto and at the sametime .the total area of such orifices is suflicient to permit a quickapplication of vacuum.

The application of suction through the suction orifices or passages willcause the cup chamber to be filled uniformly with glass throughoutthecross section of the cup chamber. If desired, pressure may be admittedthrough the same orifices or passages at the proper time to eject theglass from the cup.

The cup may be made of metal or of suitable composition, such as brushcarbon, which will minimizethe surface chill imparted to the glass andto which the molten glass will not stick, or with metallic outer wallsand an inner lining of a suitable composition, such as is disclosed'inmy copending prior application, Serial No. 203.891, filed July 5, 1927,for mold charge collecting device.

While the description of the invention given above refers particularlyto a suction gathering cup of the type which draws its charge upwardfrom the surface of a pool of molten glass, the invention is alsoapplicable to a collecting receptacle of the type which receives itscharge from an outlet located above the receptacle. It may be desirableto create a vacuum in such a collecting receptacle at the time that theglass enters thereinto, to

' prevent air from remaining in. the cup and causing bubbles in theglass, to effect quick and uniform filling of the cup, and to minimizeunequal chilling of the glass entering the cup. It will be understoodthat this use, as well as the one hereinbefore described is contemplatedas being within the scope of my invention.

It will also be understood that the embodiment of the invention shownabove is for the purpose of illustration only, and various modificationsmay be made therein without departing from the spirit and the scope ofthe invention, as defined in the subjoined claims.

I claim:

1. A suction gathering cup having a removable suction head at one endthereof, said .7 head being formed of sections, said sections havingtransverse openings therein aligned. with each other, said cup having anopening aligned with said transverseopenings, and

a pin received in said aligned openings.

2. A suction gathering cup having a removable suction head at one endthereof, said head being formed of sections having transverse openingstherein aligned with each other, said cup having an opening aligned withsaid transverse openings, a pin received in said aligned openings, aholder fitting over said cup and the ends of said pin, and means forretaining said holder in place.

3. 'A suction cup for glass Working machinery having a chamber and acylindrical suction head removably secured in an opening in one end ofthe cup, the end of said cylindrical head adjacent to said chamber beingof slightly less diameter than said opening.

4. A suction cup having a chamber and a cylindrical suction head in anopening in one end of the cup, said head having an annular grooveintermediate its ends, and a longitudinal groove between said annulargroove and one end of said head, the diameter of said head beingslightly less than said opening between said annular groove andthe'other end of said head.

5. For a suction gathering cup having a gathering chamber and acylindrical opening, a sectional head comprising a plurality ofconcentric cylindrical sleeves, each sleeve being of slightly lessdiameter-at its end adjacent to said chamber than the opening in whichit is placed, said head also having passages for placing the spacesbetween the sleeves in communication with a source of suction.

6. For a suction gathering cup having a gathering chamber and acylindrical opening, a'sectional head comprising a plurality ofconcentric cylindrical sleeves, each sleeve having an annular grooveintermediate its ends, a longitudinal groove between said annular grooveand one end of said sleeve, each sleeve being of slightly less diameterbetween said annular groove and the other end of said sleeve than theopening in which it is placed.

7. In combination, a suction gathering cup having a gathering chamber, asupporting arm having a suction duct, a cylindrical opening between saidchamber and said duct, and a plurality of concentric members in saidopening, each member having an annular groove intermediate its ends, alongitudinal groove between said annular groove and said suction ductand thin annular passages between said annular groove and said chamber,and means for holding said members in said opening.

Signed at Hartford, Connecticut, this 10th day of March, 1928.

KARL E. PEILER.

